Yay, it's you! Very interesting. Of you would, please; Which spec is it specifically that it's not compliant with? I'm not too well read on the subject.
I don't have the actual standard (they're always difficult to get hold of), but it fails automatically by being a 2-pin power supply without a double isolated transformer. Either the primary or the secondary winding needs to have an extra insulating sleeve over the magnet wire so that you're not only depending on the laquer to provide isolation between primary and secondary. It's very common for the laquer to get scratched off close to the PCB pins, potentially causing a bridge from primary to secondary, and creating an extremely deadly situation.
I wish I had the setup to test to 5kV, but I suspect this wouldn't pass the 1kV testing I can do. Maybe I should make a video on the difference between quality SMPS transformers and the crap they usually make this time.
10.11 Gohms at 1500V is fine. That only 150nA. You couldn't even light an LED with 150nA and you won't feel anything. 1500V is 5 times what mains voltage is anyway. ive seen better and ive certainly seen worse but this is ok for this device. Its good enough - the signal generator doesn't draw much current so it only needs a small PSU and the transformer didn't flash over even at 5KV. The leakage will be the blue Y capacitor between Primary and Secondary and all SMPS have one so there will always be some. Since the secondary ground is connected to mains earth, any leakage will go to earth anyway. Also you should be connecting L and N together when testing.
Any 2-pin mains power supply without a double isolated transformer belongs in the trash. It really is as simple as that. Before you argue that the device has a 3-pin power connector - that's just bodged on. It was replaced with a $10 Mean Well power supply that's actually not a danger to life.
In the US the wall outlets are only 120 volts, so I would have used that supply based on the tests. The US of course has 240 volts in every home, we just don't use it for small appliances. Honestly I would be paranoid about stuff if it all ran off 240 volts as well. I was hit once by 480 in an industrial situation and my arm hurt for weeks. Been hit by 120 many times and well it's just annoying.
The problem is that the power supply is not double isolated, and there's a very real risk that the transformer shorts out between primary and secondary - potentially connecting live to the case of the device. 120 or 230 V - that is extremely dangerous.
@@FFcossag Honestly I think the same can probably be said for 75% of the devices in homes if you really start to tear them down. Not much quality in manufacturing anymore. Sounds like you speak from experience. DGW I think find about 90% of the transformers have 'dodgy' issues.
This is very much not the case at all! Any device built by a reputable brand is going to be extremely safe, because the repercussions if they screw up are MASSIVE, and it's simply not worth the risk for them. The reason no-name chinese goods are so often dangerous is that there's no accountability; the manufacturer that supplied Banggood with this thing in the video will NEVER be punished for any damage their products cause.
The IEC cable would be ok for low current. I agree the pins are not good quality and i wouldn't it with a high current applicance but the signal generator doesn't draw anywhere near 16A and neither do most other things. You could easily put a new plug on it if you're that bothered. The wires look OK and i would use it.
The problem is that the cord is not attached to the device. The cable WILL become separated from the device with time, and is likely to end up connected to a much heavier load. That cable is not legal for sale or use within the EU. As the legally responsible importer, it's my duty to destroy it.
Yay, it's you! Very interesting. Of you would, please; Which spec is it specifically that it's not compliant with? I'm not too well read on the subject.
I don't have the actual standard (they're always difficult to get hold of), but it fails automatically by being a 2-pin power supply without a double isolated transformer. Either the primary or the secondary winding needs to have an extra insulating sleeve over the magnet wire so that you're not only depending on the laquer to provide isolation between primary and secondary. It's very common for the laquer to get scratched off close to the PCB pins, potentially causing a bridge from primary to secondary, and creating an extremely deadly situation.
I wish I had the setup to test to 5kV, but I suspect this wouldn't pass the 1kV testing I can do.
Maybe I should make a video on the difference between quality SMPS transformers and the crap they usually make this time.
10.11 Gohms at 1500V is fine. That only 150nA. You couldn't even light an LED with 150nA and you won't feel anything. 1500V is 5 times what mains voltage is anyway. ive seen better and ive certainly seen worse but this is ok for this device. Its good enough - the signal generator doesn't draw much current so it only needs a small PSU and the transformer didn't flash over even at 5KV.
The leakage will be the blue Y capacitor between Primary and Secondary and all SMPS have one so there will always be some. Since the secondary ground is connected to mains earth, any leakage will go to earth anyway. Also you should be connecting L and N together when testing.
What a waste. You didn't need to f**king snap it in half.
I have the FY6800 and im still using it with the original PSU. Its good enough for what i use it for.
Any 2-pin mains power supply without a double isolated transformer belongs in the trash. It really is as simple as that. Before you argue that the device has a 3-pin power connector - that's just bodged on.
It was replaced with a $10 Mean Well power supply that's actually not a danger to life.
In the US the wall outlets are only 120 volts, so I would have used that supply based on the tests. The US of course has 240 volts in every home, we just don't use it for small appliances. Honestly I would be paranoid about stuff if it all ran off 240 volts as well. I was hit once by 480 in an industrial situation and my arm hurt for weeks. Been hit by 120 many times and well it's just annoying.
The problem is that the power supply is not double isolated, and there's a very real risk that the transformer shorts out between primary and secondary - potentially connecting live to the case of the device. 120 or 230 V - that is extremely dangerous.
@@FFcossag Honestly I think the same can probably be said for 75% of the devices in homes if you really start to tear them down. Not much quality in manufacturing anymore. Sounds like you speak from experience. DGW I think find about 90% of the transformers have 'dodgy' issues.
This is very much not the case at all! Any device built by a reputable brand is going to be extremely safe, because the repercussions if they screw up are MASSIVE, and it's simply not worth the risk for them. The reason no-name chinese goods are so often dangerous is that there's no accountability; the manufacturer that supplied Banggood with this thing in the video will NEVER be punished for any damage their products cause.
@@FFcossag Very good points indeed.
Main problem i have found with power cords from china is the neutral and hot wires are reversed.
And they are made out of CCA wire, or worse copper clad steel, or copper clad toxic waste 😁
The IEC cable would be ok for low current. I agree the pins are not good quality and i wouldn't it with a high current applicance but the signal generator doesn't draw anywhere near 16A and neither do most other things. You could easily put a new plug on it if you're that bothered. The wires look OK and i would use it.
The problem is that the cord is not attached to the device. The cable WILL become separated from the device with time, and is likely to end up connected to a much heavier load.
That cable is not legal for sale or use within the EU. As the legally responsible importer, it's my duty to destroy it.